ComprehensivePrecipitationGenerator: no visible global function
  definition for 'residuals'
ComprehensiveTemperatureGenerator: no visible global function
  definition for 'residuals'
GPCA: no visible global function definition for 'residuals'
GPCA_iteration: no visible global function definition for 'cor'
VAR_mod: no visible global function definition for 'embed'
VAR_mod: no visible global function definition for 'lm'
acvWGEN: no visible global function definition for 'par'
acvWGEN: no visible global function definition for 'acf'
arch_test: no visible global function definition for 'residuals'
covariance: no visible global function definition for 'cov'
forecastEV: no visible global function definition for 'rnorm'
forecastEV: no visible global function definition for 'coef'
forecastResidual: no visible global function definition for 'rnorm'
newVARmultieventRealization: no visible global function definition for
  'rnorm'
newVARmultieventRealization: no visible global function definition for
  'cov'
newVARmultieventRealization: no visible global function definition for
  'residuals'
normalizeGaussian: no visible global function definition for 'pnorm'
normalizeGaussian: no visible global function definition for 'quantile'
normalizeGaussian: no visible global function definition for 'ecdf'
normalizeGaussian: no visible global function definition for 'runif'
normalizeGaussian: no visible global function definition for 'qnorm'
normalizeGaussian_prec: no visible global function definition for
  'pnorm'
normalizeGaussian_prec: no visible global function definition for
  'quantile'
normalizeGaussian_prec: no visible global function definition for
  'ecdf'
normalizeGaussian_prec: no visible global function definition for
  'qnorm'
normalizeGaussian_prec: no visible global function definition for
  'runif'
plotDailyClimate: no visible global function definition for 'plot'
plotDailyClimate: no visible global function definition for 'lines'
plotDailyClimate: no visible global function definition for 'legend'
plot_sample: no visible global function definition for 'hist'
plot_sample: no visible global function definition for 'par'
plot_sample: no visible global function definition for 'layout'
plot_sample: no visible global function definition for 'layout.show'
plot_sample: no visible global function definition for 'barplot'
plot_sample: no visible global function definition for 'plot'
plot_sample: no visible global function definition for 'rainbow'
plot_sample: no visible global function definition for 'points'
plot_sample: no visible global function definition for 'legend'
qqplot.lagged: no visible global function definition for 'rnorm'
qqplot.lagged: no visible global function definition for 'qqplot'
qqplot.lagged: no visible global function definition for 'points'
qqplotTnTxWGEN: no visible global function definition for 'par'
qqplotTnTxWGEN_seasonal: no visible global function definition for
  'pdf'
qqplotTnTxWGEN_seasonal: no visible global function definition for
  'dev.off'
qqplotWGEN: no visible global function definition for 'qqplot'
qqplotWGEN: no visible global function definition for 'abline'
qqplotWGEN: no visible global function definition for 'wilcox.test'
qqplot_RMAWGEN_Tn: no visible global function definition for 'par'
qqplot_RMAWGEN_Tn: no visible global function definition for 'qqplot'
qqplot_RMAWGEN_Tn: no visible global function definition for 'abline'
qqplot_RMAWGEN_Tn: no visible global function definition for 'dev.off'
qqplot_RMAWGEN_Tx: no visible global function definition for 'par'
qqplot_RMAWGEN_Tx: no visible global function definition for 'qqplot'
qqplot_RMAWGEN_Tx: no visible global function definition for 'abline'
qqplot_RMAWGEN_Tx: no visible global function definition for 'dev.off'
qqplot_RMAWGEN_deltaT: no visible global function definition for 'par'
qqplot_RMAWGEN_deltaT: no visible global function definition for
  'qqplot'
qqplot_RMAWGEN_deltaT: no visible global function definition for
  'abline'
qqplot_RMAWGEN_deltaT: no visible global function definition for
  'dev.off'
qqplot_RMAWGEN_prec: no visible global function definition for 'par'
qqplot_RMAWGEN_prec: no visible global function definition for 'abline'
qqplot_RMAWGEN_prec: no visible global function definition for
  'dev.off'
qqplotprecWGEN: no visible global function definition for 'par'
qqplotprecWGEN_seasonal: no visible global function definition for
  'pdf'
qqplotprecWGEN_seasonal: no visible global function definition for
  'dev.off'
residuals.varest2: no visible global function definition for
  'residuals'
setComprehensiveTemperatureGeneratorParameters: no visible binding for
  global variable 'sd'
splineInterpolateMonthlytoDaily: no visible global function definition
  for 'spline'
Undefined global functions or variables:
  abline acf barplot coef cor cov dev.off ecdf embed hist layout
  layout.show legend lines lm par pdf plot pnorm points qnorm qqplot
  quantile rainbow residuals rnorm runif sd spline wilcox.test
Consider adding
  importFrom("grDevices", "dev.off", "pdf", "rainbow")
  importFrom("graphics", "abline", "barplot", "hist", "layout",
             "layout.show", "legend", "lines", "par", "plot", "points")
  importFrom("stats", "acf", "coef", "cor", "cov", "ecdf", "embed", "lm",
             "pnorm", "qnorm", "qqplot", "quantile", "residuals",
             "rnorm", "runif", "sd", "spline", "wilcox.test")
to your NAMESPACE file.